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    Re: Sextants with Polarizing filters
    From: Joel Jacobs
    Date: 2006 Jan 29, 23:36 +0000
    Frank,
     
    There were limited quantities of Navy MK II sextants made with polarizing filters fro use in WW II. Every once in a while one will surface. In general, they never really caught on in th enavy or out. Capt. Sorreson of Coast and Simex fame was a proponent, and you see many of the Simex brand, a private label, with them..
     
    Joel
     
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    -------------- Original message from Frank Reed <FrankReedCT@AOL.COM>: --------------


    > Any opinions on these? I think they're rather neat, but is there a downside?
    >
    > If you haven't seen them, the idea is to use crossed polarizing filters
    > which can be rotated to produce any desired amount of darkening (within a
    > certain
    > range) instead of the standard sextant shades. The earliest sextants with
    > polarizing filters apparently date from the Second World War. Is that right?
    >
    > -FER
    > 42.0N 87.7W, or 41.4N 72.1W.
    > www.HistoricalAtlas.com/lunars
       
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